This set-up is ok for manual shift but not on automatic gearbox as its lack in back pressure.
So, I visited another exhaust shop at Danau Kota..F1 exhaust specialist. After much discussion..bla,bla,bla...the new set up was finalised.
2 pcs swirl flow bullet, this will create sufficient back pressure.
The cut-off section of the swirl bullet...
The old exhaust bellow and goose neck is too small only about 1.7inches as compare from the extractor which is 2 inches.
I replace with a new exhaust bellow and new stainless steal goose neck.
The old set-up was removed..but anyway I leave the std rear muffler. I plan to change it once I found a suitable and quite sports muffler..maybe a Remus!
The final set up...
The verdict.... I can feel allot of different both power and pick up...the joy of driving has return! The std rear muffler is giving more exhaust noise than before during acceleration and the air filter noise also has increase a little bit but its negligible.